#include <iostream>
#include <string> 
using namespace std;

int main()
{   //freopen("in.txt","r",stdin);
	int n;
	int zushu=1;
    while(cin>>n&&n!=0)
	{   
		char s[20][30];
		int i,j,k;
		for(i=1;i<=n;i++)
		{
			cin>>s[i];
		}
		cout<<"SET "<<zushu<<endl;
		for(k=1;k<=n;k+=2)
			cout<<s[k]<<endl;
		for(j=(n/2)*2;j>=2;j-=2)
			cout<<s[j]<<endl;
		zushu++;
	}
	return 0;
}